Peptídeos

Modified HIV TAT Sequence 49-57 for Click Chemistry. Product available as a trifluoroacetate salt

Diethylcyanomethylphosphonate is a hydrochloric acid salt of diethylcyanomethylphosphonic acid. It is used in the asymmetric synthesis of many organic molecules, including pharmaceuticals, and has been shown to have antiviral properties. Diethylcyanomethylphosphonate binds to the receptor on the surface of cells and inhibits their growth. This may be due to its ability to block the binding of sodium ions to cell receptors. The drug also prevents hydroxyl group metabolism and has been shown to be active against infectious diseases such as HIV and malaria.

Blocks the Wnt pathway and inhibits the expression of TGFb1 in CT26 colon carcinoma cells, leading to the reduction of CCL20 and CCL22, two TGF-b- dependent chemokines critical for Treg cell recruitment into the tumour microenvironment.  hsBCL9CT-24 shows robust antitumour efficacy across multiple in vivo models.

Pip6a is part of a novel series of transduction peptides termed Pips (PNA/PMO internalisation peptides). Pip peptides were designed around an original R6-penetratin cell penetrating peptide (CPP) and are able to transport PNA/PMO molecules across cell membranes. Pip peptides can be covalently conjugated to PNAs/PMOs to deliver them to a variety of adult tissues, including liver, kidney, skeletal muscle, diaphragm, and heart.Due to its ability to target the heart, pip6a has important implications for the development of therapeutic antisense oligonucleotide therapy using PMOs for diseases such as Duchenne muscular dystrophy (DMD). DMD causes progressive muscle weakening and often results in cardiac failure and death. Pip6a has also been studied for delivery of antisense oligonucleotide therapy in spinal muscular atrophy (SMA).

Histone H3 (1 - 20) K4Me3 is derived from Histone 3 (H3), which is one of the four core histones (H2A, H2B, H3 and H4) fundamental in compacting eukaryotic DNA into the nucleosome. The nucleosome arises when 147 base pairs of DNA wrap around a H3-H4 tetramer and two H2A-H2B dimers, forming the histone octamer core. H4 and H3 are highly conserved and perform roles in binding to segments of DNA which enter and leave the nucleosome and in chromatin formation. Like the other core histone, H3 has a globular domain and a flexible N-terminal domain, 'histone tail' which can undergo modifications such as acetylation, methylation, phosphorylation and ubiquitination. Due to histones containing many lysine and arginine residues, they have a positive net charge which interacts electrostatically with the negatively charged phosphate groups in DNA. The transcriptional activation or silencing of the chromatin is controlled by ATP-dependent chromatin remodelling factors and histone-modifying enzymes which target histone proteins. Both processes alter the positioning of the nucleosome, allowing the DNA to be either available or inaccessible to the transcription machinery.Histone tails can undergo multiple modifications, including acetylation, methylation, ubiquitylation and sumoylation.  The purpose of the modifications is believed to alter chromatin function/structure.  Lysine 4 of Histone H3 (1 - 20) K4Me3 has been tri-methylated, lysine 9 has been acetylated, and serine 10 has been phosphorylated. This peptide is labelled with the Aurora Fluor 647 fluorescent tag.

(KFF)3K is a cationic cell penetrating peptide which can be conjugated to PNA oligomers to aid in their penetration of the bacterial cell wall to function as anti-microbials. (KFF)3K is labelled at the N-terminus with an alkyne attachment for ease of reaction with an opposite Click reactive partner (azide).

Peptide derived from the HIV transactivator of transcription protein. TAT is a cationic cell-penetrating peptide.